Exercise device



FIG. 1 is a perspective view of an exercise device, wherein the fasteners are shown in a closed position, showing of my new design;

FIG. 2 is a top view thereof, the bottom view being a mirror image thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a perspective view thereof wherein the fasteners are shown in an open position;

FIG. 8 is a view of the device in use in one possible environment.

The broken-line showing of environmental structure in FIG. 8 is for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an exercise device, as shown and described. 